Improved K-Best Sphere Detection for Uncoded and Coded MIMO Systems

@article{Han2012ImprovedKS,
  title={Improved K-Best Sphere Detection for Uncoded and Coded MIMO Systems},
  author={Shuangshuang Han and Tao Cui and Chintha Tellambura},
  journal={IEEE Wireless Communications Letters},
  year={2012},
  volume={1},
  pages={472-475}
}
The conventional K-best sphere decoder (KSD) keeps the best K nodes at each level of the search tree. In addition to retaining the best K nodes, we also consider all the nodes whose costs are within a certain margin of the cost of the Kth best node. The resulting algorithm is called improved K-best sphere decoder (IKSD). Three IKSD variants are considered in this letter, which are fixed threshold, normalized threshold and adaptive threshold IKSD. The proposed IKSD requires a smaller K… CONTINUE READING
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